US4777503A - Audio-video adapter for audiovisual equipment - Google Patents
Audio-video adapter for audiovisual equipment Download PDFInfo
- Publication number
- US4777503A US4777503A US06/846,458 US84645886A US4777503A US 4777503 A US4777503 A US 4777503A US 84645886 A US84645886 A US 84645886A US 4777503 A US4777503 A US 4777503A
- Authority
- US
- United States
- Prior art keywords
- audio
- switchover
- video
- equipment
- socket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
Definitions
- Audiovisual equipment with different types of audiovisual-connection sockets is known from the field of entertainment electronics. Problems occur when pieces of equipment, one having (the older) DIN No. 45 582 connection sockets and another having DIN EN No. 50049 (the European standard) for instance, are to be employed together.
- Equipment of this type includes videodisk players, mixers, video-production equipment, television sets, monitors, and videorecorders.
- connection cables have made it possible to establish connections in only one direction at a time.
- a Type I cable can be used for example to connect a television set with a DIN socket to a videorecorder with a European Standard (SCART) socket and only a Type II cable to connect a television set with a European Standard socket to a videorecorder with a DIN socket.
- European Standard sockets have separate inputs and outputs for video and audio signals (the latter involving audio-right and audio-left channels), whereas the "older" DIN sockets always has to be switched over in accordance with the signal direction. This switching is carried out by means of a signal-path selector with a relay.
- a device of universal application is known from German Pat. No. 3 140 814.
- the object of that invention is to eliminate the necessity of additional operations like unplugging and replugging connecting lines or manually switching a path selector when pieces of audiovisual equipment having different types of connection sockets are operated in conjunction.
- the electronics detector circuit described and claimed therein is said to be capable of determining from the presence and type of audio or video signals being supplied which on-line audiovisual equipmet on line is emitting and which is to receive the signals, and of accordingly releasing a switching command to the switchover circuit, which then automatically connects the output lines of the emitting equipment to the input lines of the receiving equipment.
- That device cannot be manufactured at a market-worthy price with the means presently available.
- the object of the present invention is to provide an audio-video adapter of the type initially described that will allow operations in both directions between two pieces of audiovisual equipment, and especially between two videorecorders when a videotape is being copied, that have connection sockets of different standards. This object is attained in accordance with the invention by claim 1.
- FIG. 1 is a simplified block diagram of the adapter
- FIG. 2 illustrates one embodiment of the invention by way of example, wherein the selector, the logic circuit, and the switchover device it activates are all accommodated in one housing.
- FIG. 1 illustrates, one on the right and one on the left, two pieces of audiovisual equipment, each a videorecorder VR with a television receiver TV, that are to be connected. They have different types of connection sockets, the one on the left a European Standard (SCART) and the one on the right a DIN.
- SCART European Standard
- the SCART socket has separate input E and output A contacts for audio right, audio left, and video.
- the DIN socket has joint input-output E/A contacts for audio right, audio left, and video.
- the arrows indicate the directions that the input and output signals travel in.
- a logic circuit 40 is positioned between the respective switchover-voltage socket connections.
- a path selector PS which controls the direction that the signals travel in, activates logic circuit 40, which triggers a switchover device 39 through output LS in such a way that all three switches shift from the output to the input contacts.
- logic circuit 40 automatically connects only the particular audiovisual switchover voltage S 2 that occurs when a videorecorder is playing back, to the corresponding contact of the other piece of equipment over S 1 . The voltage is simultaneously exploited to supply logic circuit 40 and switchover device 39.
- FIG. 2 illustrates a more detailed embodiment of an adapter.
- the elements identical to those in FIG. 1 are labeled identically.
- the SCART and DIN sockets are illustrated with all their contacts numbered.
- Switchover device 39 is activated by a relay 31 that is triggered by a transistor 37 when path selector PS is in state B.
- Electronic logic circuit 40 contains diodes 30, 32, 33, 34, and 35 and a resistor 36 for the base bias of transistor 37.
- Diode 34 is inside the base circuit, and the emitter circuit includes diode 32 when the switch is in state B and diode 35 when it is in state A.
- the adapter can be accommodated in a housing 38, indicated by the dot-and-dash lines in FIG. 2, which will enclose logic circuit 40, path selector PS, and switchover device 39 in a practical way.
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3424931 | 1984-07-06 | ||
DE19843424931 DE3424931A1 (en) | 1984-07-06 | 1984-07-06 | AUDIO / VIDEO ADAPTER FOR AUDIO-VISUAL DEVICES |
Publications (1)
Publication Number | Publication Date |
---|---|
US4777503A true US4777503A (en) | 1988-10-11 |
Family
ID=6240004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/846,458 Expired - Fee Related US4777503A (en) | 1984-07-06 | 1985-06-25 | Audio-video adapter for audiovisual equipment |
Country Status (8)
Country | Link |
---|---|
US (1) | US4777503A (en) |
EP (1) | EP0188474B1 (en) |
JP (1) | JPS61502708A (en) |
DE (2) | DE3424931A1 (en) |
DK (1) | DK102586A (en) |
FI (1) | FI79226C (en) |
NO (1) | NO860749L (en) |
WO (1) | WO1986000771A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2647273A1 (en) * | 1989-05-18 | 1990-11-23 | Prevost Henri | Asymmetric universal adapter designed from sockets in an epoxy moulding |
FR2658682A1 (en) * | 1990-02-16 | 1991-08-23 | Lefranc Lesnier | Recording and replay cable |
US5097344A (en) * | 1988-10-04 | 1992-03-17 | Asahi Kogaku Kogyo Kabushiki Kaisha | Apparatus for recording and playing back still video images |
US5374994A (en) * | 1989-03-31 | 1994-12-20 | Kabushiki Kaisha Toshiba | Input/output switching circuit for connecting audio/video units |
FR2744568A1 (en) * | 1996-02-07 | 1997-08-08 | Philips Electronics Nv | CONNECTING COMPONENT FOR VIDEO SIGNALS |
US5929941A (en) * | 1994-07-08 | 1999-07-27 | Sony Corporation | Television receiver |
EP1176821A1 (en) * | 2000-07-28 | 2002-01-30 | Pace Micro Technology PLC | Connector adaptor |
US6353462B1 (en) * | 1997-07-30 | 2002-03-05 | Alps Electric Co., Ltd. | Television signal and FM broadcast signal demodulator and television signal and FM broadcast signal receiver |
US6600521B1 (en) * | 1999-04-13 | 2003-07-29 | Pace Micro Technology Plc | Power loopthrough |
US20060114660A1 (en) * | 2002-08-08 | 2006-06-01 | Adc Gmbh | Distributor connection module for telecommunication and data technology |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3920590A1 (en) * | 1989-06-23 | 1991-01-03 | Thomson Brandt Gmbh | TELEVISION FOR THE PROCESSING OF AN FBAS OR IN BAS AND F SEPARATED SIGNALS |
DE19521057A1 (en) * | 1995-06-09 | 1996-12-12 | Markus Fink | Adaptor for connecting different plug connectors for entertainment- and audio-electronics |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2932588A1 (en) * | 1979-08-10 | 1981-02-12 | Siemens Ag | BROADBAND COUPLING |
US4271403A (en) * | 1978-02-21 | 1981-06-02 | Data 100 Corporation | Coaxial cable switching circuit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3483548A (en) * | 1966-05-31 | 1969-12-09 | Collins Radio Co | Synchro actuated switch system |
US3484548A (en) * | 1966-09-16 | 1969-12-16 | Ampex | Control apparatus for program distribution of broadcast and recorded video information |
US4276562A (en) * | 1980-03-31 | 1981-06-30 | Mark Stewart | TV Switching system |
DE3140814C2 (en) * | 1981-10-14 | 1984-04-05 | Eicke + Bemmerer Messtechnik oHG, 3000 Hannover | Automatic audio / video adapter |
DE3377450D1 (en) * | 1982-05-13 | 1988-08-25 | Sandvale Atel Sarl | Video adapter |
-
1984
- 1984-07-06 DE DE19843424931 patent/DE3424931A1/en not_active Withdrawn
-
1985
- 1985-06-25 JP JP60502911A patent/JPS61502708A/en active Pending
- 1985-06-25 DE DE8585903258T patent/DE3573873D1/en not_active Expired
- 1985-06-25 EP EP85903258A patent/EP0188474B1/en not_active Expired
- 1985-06-25 WO PCT/EP1985/000306 patent/WO1986000771A1/en active IP Right Grant
- 1985-06-25 US US06/846,458 patent/US4777503A/en not_active Expired - Fee Related
-
1986
- 1986-02-24 FI FI860792A patent/FI79226C/en not_active IP Right Cessation
- 1986-02-28 NO NO860749A patent/NO860749L/en unknown
- 1986-03-06 DK DK102586A patent/DK102586A/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4271403A (en) * | 1978-02-21 | 1981-06-02 | Data 100 Corporation | Coaxial cable switching circuit |
DE2932588A1 (en) * | 1979-08-10 | 1981-02-12 | Siemens Ag | BROADBAND COUPLING |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5097344A (en) * | 1988-10-04 | 1992-03-17 | Asahi Kogaku Kogyo Kabushiki Kaisha | Apparatus for recording and playing back still video images |
US5374994A (en) * | 1989-03-31 | 1994-12-20 | Kabushiki Kaisha Toshiba | Input/output switching circuit for connecting audio/video units |
FR2647273A1 (en) * | 1989-05-18 | 1990-11-23 | Prevost Henri | Asymmetric universal adapter designed from sockets in an epoxy moulding |
FR2658682A1 (en) * | 1990-02-16 | 1991-08-23 | Lefranc Lesnier | Recording and replay cable |
US5929941A (en) * | 1994-07-08 | 1999-07-27 | Sony Corporation | Television receiver |
EP0789426A1 (en) * | 1996-02-07 | 1997-08-13 | Koninklijke Philips Electronics N.V. | Connector for video signals |
FR2744568A1 (en) * | 1996-02-07 | 1997-08-08 | Philips Electronics Nv | CONNECTING COMPONENT FOR VIDEO SIGNALS |
US6353462B1 (en) * | 1997-07-30 | 2002-03-05 | Alps Electric Co., Ltd. | Television signal and FM broadcast signal demodulator and television signal and FM broadcast signal receiver |
US6600521B1 (en) * | 1999-04-13 | 2003-07-29 | Pace Micro Technology Plc | Power loopthrough |
EP1176821A1 (en) * | 2000-07-28 | 2002-01-30 | Pace Micro Technology PLC | Connector adaptor |
US20060114660A1 (en) * | 2002-08-08 | 2006-06-01 | Adc Gmbh | Distributor connection module for telecommunication and data technology |
US7548434B2 (en) | 2002-08-08 | 2009-06-16 | Adc Gmbh | Distributor connection module for telecommunication and data technology |
US20090215301A1 (en) * | 2002-08-08 | 2009-08-27 | Adc Gmbh | Distributor connection module for telecommunication and data technology |
US7936572B2 (en) | 2002-08-08 | 2011-05-03 | Adc Gmbh | Distributor connection module for telecommunication and data technology |
Also Published As
Publication number | Publication date |
---|---|
FI860792A (en) | 1986-02-24 |
EP0188474A1 (en) | 1986-07-30 |
DE3424931A1 (en) | 1986-02-06 |
FI860792A0 (en) | 1986-02-24 |
FI79226B (en) | 1989-07-31 |
NO860749L (en) | 1986-02-28 |
JPS61502708A (en) | 1986-11-20 |
DE3573873D1 (en) | 1989-11-23 |
EP0188474B1 (en) | 1989-10-18 |
FI79226C (en) | 1989-11-10 |
DK102586D0 (en) | 1986-03-06 |
DK102586A (en) | 1986-03-06 |
WO1986000771A1 (en) | 1986-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DEUTSCHE THOMSON-BRANDT GMBH, HERMANN-SCHWER-STRAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KRAMER, LOTHAR;REEL/FRAME:004559/0086 Effective date: 19860304 Owner name: DEUTSCHE THOMSON-BRANDT GMBH,GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KRAMER, LOTHAR;REEL/FRAME:004559/0086 Effective date: 19860304 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19921011 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |